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Mining Industry Journal

Issue 4+5+6 [11 - 2021], Year XXX

QR Code - Online: Issue 4+5+6 [11 - 2021], Year XXX

01. Coal price on the world market breaked high. what happened?

Nam Canh Nguyen

119

02. Discussion on some provisions of the draft decree of detailed instructions for execution of some articles in the law of environmental protection 2020 from point of view of mineral activities

Lan Thuy Nguyen, Hien Van Dao

111

03. Study to improve the efficiency of coal mine drift roadway support in the thin-layered rock mass at -80 level, 9b seam of Mao Khe coal mine company by using rockbolts

Hung Phi Nguyen

96

04. Material reinforcement-in-situ technology for improvement the quality of road surface for transporting soil and rock by truck on open-pit coal mines in Quang Ninh area

Tuoc Ngoc Do, Thanh Van Doan, Lam Phuc Dao

94

05. Use cracking powder to break the rock block

Man Xuan Nguyen, Phong Duyen Nguyen

84

06. Reseach effects of anchor plates thickness on its tangential stress and deformation distribution

Doan Viet Dao

84

07. Research on separation efficiency of new jig and reverse motion belt conveyer system in Mao Khe coal company – Vinacomin

Phuong Thi Nguyen, Dung Kim Bui

81

08. Conditions for safe use of earth leakage current protection equipment with dc measurement current in combined mine power networks

Linh Ngoc Kim

136

09. Analysis of effectively using high performance electric motors in mining

Y Nhu Do

78

10. Study on general characteristics of main ventilation fan stations and their connection to fan drift at Vinacomin underground coal mines

Chi Van Dao, Dung Tien Le

92

11. Assessment of the accuracy of the gebco seabed depth model in the middle area of the east sea

Sang Van Nguyen, Mong Van Do, Le Thanh Nguyen, Manh Xuan Dinh

95

12. Phu Ninh mineral water source, Tam Dai commune, Phu Ninh district, Quang Nam province and orientation for reasonable exploitation and use

Binh Van Do, Hai Thi Do, Ha Kim Thi Tran, Tuong Van Le

99

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